When Pompey was arrived in Spain, as is usual upon the fame of a new leader, men began to be inspired with new hopes, and those nations that had not entered into a very strict alliance with Sertorius began to waver and revolt; whereupon Sertorius uttered various arrogant and scornful speeches against Pompey, saying, in derision, that he should want no other weapon but a ferula and rod to chastise this boy with, if he were not afraid of that old woman, meaning Metellus. Yet in deed and reality he stood in awe of Pompey, and kept on his guard against him, as appeared by his whole management of the war, which he was observed to conduct much more warily than before: for Metellus, which one would not have imagined, was grown excessively luxurious in his habits, having given himself over to self-indulgence and pleasure, and from a moderate and temperate became suddenly a sumptuous and ostentatious liver, so that this very thing gained Pompey great reputation and good-will, as he made himself somewhat specially an example of frugality, although that virtue was habitual in him, and required no great industry to exercise it, as he was naturally inclined to temperance, and no ways inordinate in his desires. The fortune of the war was very various; nothing, however, annoyed Pompey so much as the taking of the town of Lauron by Sertorius. For when Pompey thought he had him safe enclosed, and had boasted somewhat largely of raising the siege, he found himself all of a sudden encompassed; insomuch that he durst not move out of his camp;but was forced to sit still whilst the city was taken and burnt before his face. However, afterwards, in a battle near Valentia, he gave a great defeat to Herennius and Perpenna, two commanders among the refugees who had fled to Sertorius, and now lieutenants under him, in which he slew above ten thousand men.
Pompey, being elated and filled with confidence by this victory, made all haste to engage Sertorius himself, and the rather lest Metellus should come in for a share in the honour of the victory. Late in the day towards sunset they joined battle near the river Sucro, both being in fear lest Metellus should come: Pompey, that he might engage alone, Sertorius, that he might have one alone to engage with. The issue of the battle proved doubtful, for a wing of each side had the better, but of the generals Sertorius had the greater honour, for that he maintained his post, having put to flight the entire division that was opposed to him, whereas Pompey was himself almost made a prisoner; for being set upon by a strong man-at-arms that fought on foot (he being on horseback), as they were closely engaged hand to hand the strokes of their swords chanced to light upon their hands, but with a different success; for Pompey's was a slight wound only, whereas he cut off the other's hand. However, it happened so, that many now falling upon Pompey together, and his own forces there being put to the rout, he made his escape beyond expectation, by quitting his horse, and turning him out among the enemy. For the horse being richly adorned with golden trappings, and having a caparison of great value, the soldiers quarrelled among themselves for the booty, so that while they were fighting with one another, and dividing the spoil, Pompey made his escape. By break of day the next morning each drew out his forces into the field to claim the victory; but Metellus coming up, Sertorius vanished, having broken up and dispersed his army. For this was the way in which he used to raise and disband his armies, so that sometimes he would be wandering up and down all alone, and at other times again he would come pouring into the field at the head of no less than one hundred and fifty thousand fighting men, swelling of a sudden like a winter torrent.
When Pompey was going, after the battle, to meet and welcome Metellus, and when they were near one another, he commanded his attendants to lower their rods in honour of Metellus, as his senior and superior. But Metellus on the other side forbade it, and behaved himself in general very obligingly to him, not claiming any prerogative either in respect of his consular rank or seniority;excepting only that when they encamped together, the watchword was given to the whole camp by Metellus. But generally they had their camps asunder, being divided and distracted by the enemy, who took all shapes, and being always in motion, would by some skilful artifice appear in a variety of places almost in the same instant, drawing them from one attack to another, and at last keeping them from foraging, wasting the country, and holding the dominion of the sea, Sertorius drove them both out of that part of Spain which was under his control, and forced them, for want of necessaries, to retreat into provinces that did not belong to them.